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#FloridaKeys

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Tino Eberl

Erstmals wurde in den #USA eine Art durch den steigenden #Meeresspiegel ausgerottet: Der #KeyLargoBaumkaktus. Diese Pflanze, die einst in den #FloridaKeys beheimatet war, wurde durch die kombinierte Wirkung von steigendem Meeresspiegel, häufigeren Stürmen und #Salzwassereinbruch verdrängt. Die verbleibenden #Kakteen wurden 2023 entnommen, um ihr Überleben zu sichern. Diese Bedrohungen durch den #Klimawandel ist ein Alarmzeichen für viele andere #Küstenpflanzen.

edition.cnn.com/2024/07/14/cli

Public
Benjamin Carr, Ph.D. 👨🏻‍💻🧬

What’s Killing #Endangered #Sawfish in #Florida?
Off #FloridaKeys fish — jacks, snook — swim in spirals or upside down in shallow waters of #Atlantic and #GulfofMexico. So were #stingrays and the occasional #shark. Then, endangered sawfish started dying. Scientists are racing to figure out why but have not yet figured out what is going on. They have ruled out a few potential causes, including #redtide, toxic #algalbloom that has led to past kills.
nytimes.com/2024/04/15/us/sawf
archive.ph/Ow8HB

The New York Times · What’s Killing Endangered Sawfish in Florida?By Patricia Mazzei
Public
DoomsdaysCW

WHOI: Harmful Algae: #Gambierdiscus

- Benthic dinoflagellate genus
- Over 18 defined species and several ribotypes identified
- Found globally in tropical and subtropical regions
- Produce #ciguatoxins, which may lead to:
• Human illness (Ciguatera Poisoning)
• Significant public health impacts
• Economic losses associated with health-related costs and lost productivity

"Taxonomic studies have identified at least 18 species within the Gambierdiscus genus, many of which co-occur and differ significantly in toxicity. At least ten of these species have been found in tropical and subtropical regions of the U.S., including #Hawaii, the #GulfOfMexico, the #FloridaKeys, #PuertoRico, and the #USVirginIslands.

"Temperature is a key factor controlling CTX occurrence, and laboratory experiments investigating the influence of temperature on growth of various Gambierdiscus species have shown that most species exhibit maximum growth rates between 24–30°C, but that growth responses varied by species. For example, temperature tolerances vary among species, although all are sensitive to higher temperatures, with steep declines in growth as temperatures exceed ~31°C.

"Thus higher temperatures may favor growth of more thermally tolerant species in ciguatera endemic regions, and promote establishment of species shown to be less tolerant in subtropical and temperate regions. Warm surface temperatures may also favor increased abundance of Gambierdiscus populations in deeper waters.

"There is recent evidence of geographic range expansion of #Gambierdiscus and CP into higher latitudes in U.S. waters, associated with climate-driven warming. Over the past two decades CP and CTXs were reported for the first time in the northern Gulf of Mexico, and ephemeral populations of Gambierdiscus have also been documented in #NorthCarolina. Prolonged periods of elevated water temperatures at these locations and in northern Florida are hypothesized to result in increased Gambierdiscus and Fukuyoa cell densities."

hab.whoi.edu/species/species-b

#Extinction #ToxicAlgae
#Fish #ClimateChange #ClimateCrisis #WarmingOceans #WaterIsLife #WaterTemperatures

hab.whoi.edu Gambierdiscus – Harmful Algal Blooms
Public *
DoomsdaysCW

Fish are dying in the #FloridaKeys. Scientists are getting closer to finding out why

By Heather Walker
March 12, 2024

"The Florida Fish and Wildlife Commission says 27 species are now affected, primarily in the lower keys from #BigPine to #KeyWest, including the critically #endangered smalltooth #sawfish. Many have grounded themselves. As of last week, 20 have died."

Full article:
wsvn.com/news/investigations/f

#HABs #HarmfulAlgaeBlooms #Gambierdiscus #Florida #Extinction #ToxicAlgae
#Fish #Florida #ClimateChange
#ClimateCrisis #WarmingOceans
#WaterIsLife #WaterTemperatures

WSVN 7News | Miami News, Weather, Sports | Fort Lauderdale · Fish are dying in the Florida Keys. Scientists are getting closer to finding out why - WSVN 7News | Miami News, Weather, Sports | Fort Lauderdale(WSVN) - Scientists want to know what is going on in the waters off the Florida Keys. That’s because fish there are behaving strangely and<a class="excerpt-read-more" href="https://wsvn.com/news/investigations/fish-are-dying-in-the-florida-keys-scientists-are-getting-closer-to-finding-out-why/">Read More</a>
Public
O=C=O

Hot seawater killed most of cultivated coral in #Florida Keys in setback for restoration effort

Researchers are finding that record hot seawater killed more than three-quarters of human-cultivated #coral that scientists had placed in the #FloridaKeys in recent years.

apnews.com/article/coral-reefs

AP News · Hot seawater killed most of cultivated coral in Florida KeysBy SETH BORENSTEIN
#ClimateCatastrophe#Biodiversity
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